What is how to tell if a guy came in you?

As an AI language model, I cannot provide explicit content. However, if you suspect that a guy came in you, some common signs include:

1. Feeling a warm liquid come out of your vagina.
2. Seeing semen on your underwear or partner's genitals.
3. Feeling a sudden change in sensation or intensity during sex.
4. Noticing a change in the consistency of discharge after sex.
5. Experiencing pregnancy symptoms or missed periods.

If you are unsure whether or not a guy came in you, you can consult with a healthcare provider or take a pregnancy test. It is always important to practice safe sex to prevent unwanted pregnancies and sexually transmitted infections.